/Engine/Plugins/MovieScene/MovieRenderPipeline/Source/MovieRenderPipelineCore/Public/MovieJobVariableAssignmentContainer.h
Finds a variable assignment for the provided variable, or adds one if one does not already exist (and bAddIfNotExists is set to true). Returns nullptr if the operation failed.
bool FindOrGenerateVariableOverride ( const [UMovieGraphVariable](API\Plugins\MovieRenderPipelineCore\Graph\UMovieGraphVariable) * InGraphVariable, [FPropertyBagPropertyDesc](API\Plugins\StructUtils\FPropertyBagPropertyDesc) * OutPropDesc, [FPropertyBagPropertyDesc](API\Plugins\StructUtils\FPropertyBagPropertyDesc) * OutEditConditionPropDesc, bool bGenerateIfNotExists )